#include "StdAfx.h"
#include "UIText.h"

namespace DuiLib
{
    CTextUI::CTextUI() : m_nLinks(0), m_nHoverLink(-1)
    {
        m_uTextStyle = DT_WORDBREAK;
        m_rcTextPadding.left = 2;
        m_rcTextPadding.right = 2;
        ::ZeroMemory(m_rcLinks, sizeof(m_rcLinks));
    }

    CTextUI::~CTextUI()
    {
    }

    LPCTSTR CTextUI::GetClass() const
    {
        return DUI_CTR_TEXT;
    }

    LPVOID CTextUI::GetInterface(LPCTSTR pstrName)
    {
        if (_tcscmp(pstrName, DUI_CTR_TEXT) == 0) return static_cast<CTextUI*>(this);
        return CLabelUI::GetInterface(pstrName);
    }

    UINT CTextUI::GetControlFlags() const
    {
        if (IsEnabled() && m_nLinks > 0) return UIFLAG_SETCURSOR;
        else return 0;
    }

    CDuiString* CTextUI::GetLinkContent(int iIndex)
    {
        if (iIndex >= 0 && iIndex < m_nLinks) return &m_sLinks[iIndex];
        return NULL;
    }

    void CTextUI::DoEvent(TEventUI& event)
    {
        if (!IsMouseEnabled() && event.Type > UIEVENT__MOUSEBEGIN && event.Type < UIEVENT__MOUSEEND) {
            if (m_pParent != NULL) m_pParent->DoEvent(event);
            else CLabelUI::DoEvent(event);
            return;
        }

        if (event.Type == UIEVENT_SETCURSOR) {
            for (int i = 0; i < m_nLinks; i++) {
                if (::PtInRect(&m_rcLinks[i], event.ptMouse)) {
                    ::SetCursor(::LoadCursor(NULL, MAKEINTRESOURCE(IDC_HAND)));
                    return;
                }
            }
        }
        if (event.Type == UIEVENT_BUTTONDOWN || event.Type == UIEVENT_DBLCLICK && IsEnabled()) {
            for (int i = 0; i < m_nLinks; i++) {
                if (::PtInRect(&m_rcLinks[i], event.ptMouse)) {
                    Invalidate();
                    return;
                }
            }
        }
        if (event.Type == UIEVENT_BUTTONUP && IsEnabled()) {
            for (int i = 0; i < m_nLinks; i++) {
                if (::PtInRect(&m_rcLinks[i], event.ptMouse)) {
                    m_pManager->SendNotify(this, DUI_MSGTYPE_LINK, i);
                    return;
                }
            }
        }
        if (event.Type == UIEVENT_CONTEXTMENU)
        {
            return;
        }
        // When you move over a link
        if (m_nLinks > 0 && event.Type == UIEVENT_MOUSEMOVE && IsEnabled()) {
            int nHoverLink = -1;
            for (int i = 0; i < m_nLinks; i++) {
                if (::PtInRect(&m_rcLinks[i], event.ptMouse)) {
                    nHoverLink = i;
                    break;
                }
            }

            if (m_nHoverLink != nHoverLink) {
                m_nHoverLink = nHoverLink;
                Invalidate();
                return;
            }
        }
        if (event.Type == UIEVENT_MOUSELEAVE) {
            if (m_nLinks > 0 && IsEnabled()) {
                if (m_nHoverLink != -1) {
                    if (!::PtInRect(&m_rcLinks[m_nHoverLink], event.ptMouse)) {
                        m_nHoverLink = -1;
                        Invalidate();
                        if (m_pManager) m_pManager->RemoveMouseLeaveNeeded(this);
                    }
                    else {
                        if (m_pManager) m_pManager->AddMouseLeaveNeeded(this);
                        return;
                    }
                }
            }
        }

        CLabelUI::DoEvent(event);
    }

    void CTextUI::PaintText(HDC hDC)
    {
        if (m_sText.IsEmpty()) {
            m_nLinks = 0;
            return;
        }

        if (m_dwTextColor == 0) m_dwTextColor = m_pManager->GetDefaultFontColor();
        if (m_dwDisabledTextColor == 0) m_dwDisabledTextColor = m_pManager->GetDefaultDisabledColor();

        if (m_sText.IsEmpty()) return;

        m_nLinks = lengthof(m_rcLinks);
        RECT rc = m_rcItem;
        rc.left += m_rcTextPadding.left;
        rc.right -= m_rcTextPadding.right;
        rc.top += m_rcTextPadding.top;
        rc.bottom -= m_rcTextPadding.bottom;
        if (IsEnabled()) {
            if (m_bShowHtml)
                CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, m_sText, m_dwTextColor, \
                    m_rcLinks, m_sLinks, m_nLinks, m_iFont, m_uTextStyle);
            else
                CRenderEngine::DrawText(hDC, m_pManager, rc, m_sText, m_dwTextColor, \
                    m_iFont, m_uTextStyle);
        }
        else {
            if (m_bShowHtml)
                CRenderEngine::DrawHtmlText(hDC, m_pManager, rc, m_sText, m_dwDisabledTextColor, \
                    m_rcLinks, m_sLinks, m_nLinks, m_iFont, m_uTextStyle);
            else
                CRenderEngine::DrawText(hDC, m_pManager, rc, m_sText, m_dwDisabledTextColor, \
                    m_iFont, m_uTextStyle);
        }
    }
}
